Posted July 20, 2017 Just went through and water cooled my PC last weekend, then left my apartment for 3 days and have just been using it this afternoon. I'm concerned about the temps that the CPU is reportedly reaching. I have a full EK loop with the MSI Gaming Xpower Titanium Z170 monoblock over an Intel 6700k @ 4.5 GHz (Aida64 says 1.392 V) and 2 Nvidia 1080 Ti in SLI with no overclocking. The cooling loop is res/pump > 240 rad with two EK Vardar fans pushing out through the bottom > gpus in parallel > 360 rad with 3 EK Vardar fans pushing out through the top & 2 200mm NZXT fans pulling > cpu block > back to res/pump. I keep the fans maxed, and the pump is tied to the CPU fan header, with the BIOS set to 50% at 20 C. and ramping up to 100% by 70 C. All other fans are at 100% constantly. At idle, everything is right at ~30 C, the CPU seems to have a few spikes and fluctuates more than the GPUs. I have been watching temps with MSI Afterburner (CPU1 temperature) as well as Open Hardware Monitor. Playing GTA V for about an hour or so, temperatures for the graphics cards did not go above 40 C, which I thought was great. The CPU was getting up to around 75 C. I've also been trying some stress testing to watch the temperatures, I read up and tried most recent (28.5.1.0) as well as the older suggested version (26.6.1.0) of Prime95 doing a CPU test, and in both cases the temp shot up to 95-100 C immediately. I didn't feel comfortable with that and have not let the test run more than a few seconds to see if it comes down at all. After stopping the test it goes immediately back to ~30 C. Testing in Aida64 as well, even though that also goes up to 100% usage, the temps were more around the mid 80s C. Before going with the full watercooling loop I had a Deepcool Captain 240 and felt like the temperature graphs weren't as jumpy, and temps weren't quite as high while gaming. I never did run any tests with that cooler, though, so I don't have a reference. I dunno, am I just crazy and too worried about it? I know I'm not going to be stress testing it all the time, and I've had other people say that mid-70s are okay temps for a gaming load. Links to parts list (without full cooling loop list) and minor build log: https://pcpartpicker.com/user/splodeybaloney/saved/wTsqsY and http://imgur.com/gallery/Z5RUn Link to comment Share on other sites More sharing options... Link to post Share on other sites More sharing options...
Posted July 20, 2017 1 minute ago, splodeybaloney said: Just went through and water cooled my PC last weekend, then left my apartment for 3 days and have just been using it this afternoon. I'm concerned about the temps that the CPU is reportedly reaching. I have a full EK loop with the MSI Gaming Xpower Titanium Z170 monoblock over an Intel 6700k @ 4.5 GHz (Aida64 says 1.392 V) and 2 Nvidia 1080 Ti in SLI with no overclocking. The cooling loop is res/pump > 240 rad with two EK Vardar fans pushing out through the bottom > gpus in parallel > 360 rad with 3 EK Vardar fans pushing out through the top & 2 200mm NZXT fans pulling > cpu block > back to res/pump. I keep the fans maxed, and the pump is tied to the CPU fan header, with the BIOS set to 50% at 20 C. and ramping up to 100% by 70 C. All other fans are at 100% constantly. At idle, everything is right at ~30 C, the CPU seems to have a few spikes and fluctuates more than the GPUs. I have been watching temps with MSI Afterburner (CPU1 temperature) as well as Open Hardware Monitor. Playing GTA V for about an hour or so, temperatures for the graphics cards did not go above 40 C, which I thought was great. The CPU was getting up to around 75 C. I've also been trying some stress testing to watch the temperatures, I read up and tried most recent (28.5.1.0) as well as the older suggested version (26.6.1.0) of Prime95 doing a CPU test, and in both cases the temp shot up to 95-100 C immediately. I didn't feel comfortable with that and have not let the test run more than a few seconds to see if it comes down at all. After stopping the test it goes immediately back to ~30 C. Testing in Aida64 as well, even though that also goes up to 100% usage, the temps were more around the mid 80s C. Before going with the full watercooling loop I had a Deepcool Captain 240 and felt like the temperature graphs weren't as jumpy, and temps weren't quite as high while gaming. I never did run any tests with that cooler, though, so I don't have a reference. I dunno, am I just crazy and too worried about it? I know I'm not going to be stress testing it all the time, and I've had other people say that mid-70s are okay temps for a gaming load. Links to parts list (without full cooling loop list) and minor build log: https://pcpartpicker.com/user/splodeybaloney/saved/wTsqsY and http://imgur.com/gallery/Z5RUn Have you tried tightening down the CPU block more? Maybe the block isn't making contact with the CPU much. Link to comment Share on other sites More sharing options... Link to post Share on other sites More sharing options...
Posted July 20, 2017 Author That'll be the first thing I try this weekend. Link to comment Share on other sites More sharing options... Link to post Share on other sites More sharing options...
Posted July 20, 2017 I would say its fine, although I dont use a 6700K myself so not sure (my 7700K is similar to your temps at least for the gaming load). The fact that your temps drop quickly after releasing the load makes me think your mount is alright. Your GPUs are in the same loop now and so in a hybrid load like gaming they will contribute to the temperature of the whole system. Recent builds: Meshify C (Zero Tolerance!) & View 37 (Breathable Quad 2080Ti + 2990WX) Best documented PC coolants Older Builds Spoiler Full-custom loop builds: Meshify C (Full custom loop SLI), Ncase M1(8700K + 1080Ti Full custom loop) Obsidian 900D (1950X + Quad 1080Ti) & Fractal Define C (1080 in SLI) Air-cooled builds Air 740D (1920X + Quad 980Ti) & Fractal Define C (Version Air!) Link to comment Share on other sites More sharing options... Link to post Share on other sites More sharing options...
Posted July 20, 2017 I know everyone hates that one guy who comments with a video but this one is quite informative when it comes to the science behind watercooling. Also, it could be that you've used an insufficient amount of thermal paste, poor quality thermal paste, the water block and CPU heat spreader have little contact, the glue on the CPU heat spreader is creating a significant gap between the heat spreader and the die, or incorrect readings. Link to comment Share on other sites More sharing options... Link to post Share on other sites More sharing options...
Posted July 20, 2017 Few things, first off, 1.4V is quite a lot gör 4.5GHz check how tight your CPU block is and check the thermal paste. There seems to be bad thermal transfer between the CPU and loop I spent $2500 on building my PC and all i do with it is play no games atm & watch anime at 1080p(finally) watch YT and write essays... nothing, it just sits there collecting dust... Builds: The Toaster Project! Northern Bee! The original LAN PC build log! (Old, dead and replaced by The Toaster Project & 5.0) Spoiler "Here is some advice that might have gotten lost somewhere along the way in your life. #1. Treat others as you would like to be treated. #2. It's best to keep your mouth shut; and appear to be stupid, rather than open it and remove all doubt. #3. There is nothing "wrong" with being wrong. Learning from a mistake can be more valuable than not making one in the first place. Follow these simple rules in life, and I promise you, things magically get easier. " - MageTank 31-10-2016 Link to comment Share on other sites More sharing options... Link to post Share on other sites More sharing options...
Posted July 20, 2017 The temps seem right to me. Tightening your waterblock won't do anything. The reason your CPU is hot is because of the crappy toothpaste Intel uses between the CPU die and the integrated heat spreader. If you delid it and use some liquid metal you would probably see temps drop by 20C on the CPU. Also, yeah, your voltage seems really high for 4.5GHz. I would think 1.3v or lower should be stable with 4.5GHz, which would also help reduce temps. Full loop cooling doesn't usually change CPU temps that much, especially if you are already using a 240mm AIO. The major benefit is GPU temps. Don't expect your CPU temps to be as low as your GPU temps, because they probably won't. Link to comment Share on other sites More sharing options... Link to post Share on other sites More sharing options...
Posted July 20, 2017 Have you tried lowering your vcore? That quite high for low OC. My is 4.7ghz @ 1.312 v Magical Pineapples
